I purchased a used PC with Windows Vista(home premium). I removed the old owner as the administrator through the Users group and any other files left behind, renamed myself as administrator. When I try to perform class projects with Command Prompts the name is still there (C:\Users\name). Am I missing a final step in getting rid of this? Also the former name comes up when I try to download or install applications. I know enough to cause some damage so I want to procede with caution.

don't understand this question. vista has built in Administrator account, which is disabled by default. so what's this about renaming yourself as administrator? (you can't rename a 'normal' account to administrator). What I'd do with a second hand machine is create a new user for myself which would be member of administrator's group. Then I'd remove any previous create user accounts & their associated files, so only my user is available to log on with. It sounds to me that you may have renamed the previous user account, but that doesn't renames its user profile.

Does the default account bear the old owner name? If so there is nothing you can do to change it, This is by M$ design. Learn to live with it or else reinstall Vista. i_Xp/VistaUser

This is the second time I have heard about the default admin account. It sounds to me like I will indeed need to reinstal but I don't have the MS Office software. I can however get a good deal with student discounts. Thanks for your advice.